Refrigeration system.



A. DAY.

REFRIGERATION SYSTEM.

APPLIOATION FILED JULY 18. 1907.

925,625. Pa tented June 22,1909.

weak .4 uor too ler absorber 21 Primary Cooler Hem- E a t/70in Pr/ma Hen fe r g WITNESSES: INVENTOR Ci YZL I BY ABRAHAM DAY, OF BLOOMFIELD, NEW JERSEY";

REFRIGERATION SYS'IEIVI.

Specification of Letters Patent.

Application filed July 18,

Patented June 22, 1909.

1907. Serial No. 384,379.

To all whom "it may concern:

Be it known that I, ABRAHAM DAY, a citizen of the United States, residing at Bloomfield, inthe county of Essex and State of New Jersey, have invented certain new and useful Im rovements in Refrigeration Systems; an I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to figures of refer ence marked thereon, which form a part of this specification.

ThlS'lDVGIltlOIl relates to a refrigerating machine of the type that produces a low temperature, by a sorption, in which, by heating ammonia or a similar substance, a se aration of .gas, from its aqueous solution, ta 'es place and the hot gas is then condensed and cooled into a liquid, and subsequently evaporated to cool the surrounding elements to be cooled or frozen.

The object of this invention is to produce a highly efficient apparatus, and at the same time make the'process economical by heating the a ueous solution and forming ammonia gas y means of steam from a pump in the machine, or/ by live steam, and to dry the hot gas by a suitable drier installed in the system, after the gas passes through a rectifier, and before it is assed through the condenser. The gas is t hen passed through an anhydrous receiver, usual in these systems, and is then ready for the freezing step. The ammonia used to do the cooling is assed in a reverse directionand is necessari y warmed by its cooling function, after refrigeration,

andthis warming is an advantage as the ammonia is then on its way to the reliminary or secondary heater from w ch it passes into the generator. It will thus be seen that by cooling the hot gas with the cool ammonia, and heating the ammonia returning to the generator, an economical cooperation is the result.

-The invention is illustrated by the figure in the accompanying drawing, and shows a system diagrammatlcally.

The generator or still 10 is of any usual form and contains a coil 11 which receives either the exhaust steam from the pump 12, by means of the. pipe 13, or the live steam from the boiler through the ipe 14. A reducing valve '15 shuts off the 've steam until such time as the exhaust steam is inadequate i for the purpose. The coil 11 heats the water in the generator 10, and hot ammonia gas passes up through the pipe 16 through the rectifier 17, which comprises inside and outside pipes, the outside preferably carrying the hot gas. This rectifier reduces the temperature of the gasfrom say 240 F., to about 160 F., and the hot ammonia gas then passes intoa drier 18 by means of the pipe 19 and out through the pipe 20. The drier is an upright cylindrical receptacle 18, and the of its length and has an open bottom. The outlet is arranged to open in the top of the cylindrical receptacle, thus the moisture is deposited and passes out through the pipe 21 which leads from the bottom of the receptacle 18. This drier, at this point, is important as it takes the water out of the gas, since water condenses more quickly than the as, since 5% of water will decrease the rerigerating efficiency 15% or 20%. A pipe 21 conducts the extracted Water back to the generator 10. The dry gas now passes through the pipe 20 into the primary cooling coil 22, in WhlOll it is further cooled. The pipe 23 .then conducts it to the condenser 24, of the usual form, and the cooled and condensed ammonia then'is deposited in the anhydrous receiver 25, where it is ready for entry in the refrigerating coil or media 26.

The Weak ammonia water is forced by the pressure in the generator 10, through the pipe 27 into the exchanging coil 28, where it heats the anfmonia on its wayto the generator, exchanging heat for cold. The weak ammonia the weak water cooler 30, and by means of a pipe 31 goes into the absorber 32, where it absorbs the ammonia gas from the refrigerating coil or media 26, which is fed to the absorber by the pipe 33. The rich liquor then goes through the pipe 34 to the rich liquor receiver 35, and by pipe 36 to the ump 37. The pump then asses the rich liqu di gup the pipe '38, throug the previously de c ibed prlmary cooling coil 22, and the rectifier 17 to cool the hot ammonia gas, and is then on its way to the generator to be heated.- It is gradually heated after absorbing the heat in the rimary cooling coil 22, and the rectifier 17 y following the pipe 39 to the exchanging coil 28 and then through the pipe 40 to the primary heating coil 41, which is heated by the steam from heated ammonia'now enters the generator by pipe 19 projects therein for the major portion the generator 10. The

water is then conducted by the pipe 29 to A means for conducting steam'through the generator to heatit, a primary heating coil, the steam from the generator heating the primary heater, an exchanging coil, a rectifier, a cooling coil, a drier, the drier comprising an upright cylindrical tank, a'rectifier leading into the drier by a pipe extending downwardly for a major portion of the height of the drier the outlet from the drier leading from the top thereof, the hot ammonia gases assing from the generator through the rectifier the drier and the cooling coil, a pump for forcing the strong ammonia water through the cooling coil the rectifier the exchanging coil and the primary heater, an absorber, the weak ammonia passing through the exchanging coil and absorber and then to the pump to supply the strong ammonia water.

2. n a refrigerating machine, a generator, a rectifier, a cooling coil, the rectifier and the cooling coil being formed of an outside and an inside pipe, one of the pipes being used to conduct hot ammonia gas, and a drier interrupting the gas conducting pipe between the rectifier and the cooling coil to extract the water from. the gas, the drier comprising an upright tank, the gas conducting pipe enter ing the drier and terminating therein at the bottom thereof, the outlet from the drier being at the top of the'drier.

3. In a refrigerating machine, a generator, a rectifier, a cooling coil, the rectifier and the cooling coil being formed of an outside and an inside pipe, one of the pipes being used to conduct hot ammonia gas,'a drier interrupting the gas conducting pi e,' the drier comprising an upright tank, t e gas conducting 'pipe extending vertically" downward therein and having an open end near the bottom of the tank, the outlet ofthe drier being at the top thereof and a pipe to conduct water from the drier to the generator.

' 4. In a refrigerating machine, a generator, a rectifier, a cooling coil, the rectifier and the cooling coil being formed of an outside and an inside pipe, one of the pipes being used to conduct hot ammonia gas, and a drier interrupting the gas conducting pipe, the drier comprising an upright cylindrical casing for con ensation of water, an entrance pipe extendin'g'a major portion of its length within the drier and having an open end, and an outlet pipe leading from top of the drier.

In testimony, that I'claim the foregoing, I have hereunto set my handthis 17th day of July 1907.

. ABRAHAM DAY.- Witnesses E. A. PELL, S A. ROGERS. 

